code: def join_seq(seq):
      """Joins a sequence side-by-side into a single image."""
      return tf.concat(tf.unstack(seq), 1)
  
file_path: probability/tensorflow_probability/examples/sprites_dataset.py
imports: from collections import namedtuple
  import os
  import random
  import zipfile
  from absl import flags
  from six.moves import urllib
  import tensorflow.compat.v1
  from tensorflow.python.ops import lookup_ops
label_desc: Use image node_id 2 for calling a global function with example usage: join_seq(seq) and returns: tf